gh-143040: Exit taychon live mode gracefully and display profiled script errors

[mgmacias95]

This script shows the error trace when a profiled script (or python module) in the live mode fails.

Some output examples:

When running a script that fails inmediately, the live mode won't even start and you'll see the traceback directly instead:

mgmacias@mgmacias:~/cpython$ cat failing_script.py 
1/0
mgmacias@mgmacias:~/cpython$ ./python -m profiling.sampling run --live -d999999 failing_script.py 
No samples collected - process 1464940 exited before profiling could begin.
Traceback (most recent call last):
  File "<frozen runpy>", line 196, in _run_module_as_main
  File "<frozen runpy>", line 87, in _run_code
  File "/home/mgmacias/cpython/Lib/profiling/sampling/_sync_coordinator.py", line 256, in <module>
    main()
    ~~~~^^
  File "/home/mgmacias/cpython/Lib/profiling/sampling/_sync_coordinator.py", line 249, in main
    _execute_script(script_path, script_args, cwd)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/mgmacias/cpython/Lib/profiling/sampling/_sync_coordinator.py", line 196, in _execute_script
    exec(code, main_module.__dict__)
    ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/mgmacias/cpython/failing_script.py", line 1, in <module>
    1/0
    ~^~
ZeroDivisionError: division by zero

When running a test that doesn't exist, you will see a brief profiled information and when exiting the live mode you'll see this traceback:

mgmacias@mgmacias:~/cpython$ ./python -m profiling.sampling run --live -d999999 -m test test_dfgdfg
test test_dfgdfg crashed -- Traceback (most recent call last):
  File "/home/mgmacias/cpython/Lib/test/libregrtest/single.py", line 210, in _runtest_env_changed_exc
    _load_run_test(result, runtests)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/home/mgmacias/cpython/Lib/test/libregrtest/single.py", line 155, in _load_run_test
    test_mod = importlib.import_module(module_name)
  File "/home/mgmacias/cpython/Lib/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1303, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1276, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1240, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'test.test_dfgdfg'

• Issue: Tachion's TUI sometimes does not work on the first try #143040